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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Konstantin Marinov and Velika Jordanova
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DOI:10.17265/2161-6264/2017.02.006
Affiliation(s)
Faculty of Forestry, University of Forestry, Sofia 1797, Bulgaria
ABSTRACT
In this work, the costs for
machinery and all means for site preparation of forest clearings for
afforestation with intensive poplar plantations were studied by applying
various technological schemes. For this purpose, three technological schemes (TS1, TS2 and TS3), applying in Bulgaria, were studied. By applying the
respective technological scheme, the site preparation was performed entirely with a milling aggregate PT-400,
equipped with multifunctional forest tiller FAE-300/S. The processes of
shredding stumps, mulching clearing debris and bushes, and primary tillage of the soil up to depth of 50 cm
were examined. The survey was conducted in poplar clearings along the river
Danube, over alluvial moderately moist soil. A new categorization of the poplar
clearings is proposed depending on the operating conditions. The performance of
the milling unit and the relative costs for labor, machinery and means for site
preparation per unit area were defined. Depending on the category of poplar
clearings, total cost for site preparation applying the studied technology vary between 27.6 h/ha and 29.3 h/ha, which at
current prices of 53.5
€/h for the operation of PT-400 with FAE 300/S is between €1,478/ha and €1,569/ha. To conduct comparative analysis of the new
technology and the old technologies under similar operating conditions, the
relatively costs for site preparation of the previously applied technologies
which use rotary and tooth uprooter machines are defined. According to the
applied technological scheme and used machines in different categories, clearings costs for
land preparation vary between €1,230/ha and €3,300/ha. Based on comparative analysis, it is designed a new
technological scheme for afforestation with poplar plantations in riverside
clearings, where by ensuring high quality work, the costs for site preparation become lower (24.2-25.9 h/ha) and thus cost
from €993/ha to €1,084/ha
is achieved.
KEYWORDS
Forest plantations, afforestation, technological scheme for site preparation, costs, forest machinery.
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